# Physics Formulas Lite vs Unit Converter

The clearest difference is review sentiment: Physics Formulas Lite at 86% against Unit Converter's 25%. Physics Formulas Lite also leads on in-app purchases (none vs 10) and ads (none vs shown). Unit Converter's advantage is update cadence (weekly vs every 4 months) and rating (4.9 vs 4.6). On price and device support there is nothing between them.

Both are free to download. Unit Converter sells 10 in-app purchases, starting at $0.99 per 7 days. Physics Formulas Lite asks for nothing beyond the download.

Unit Converter holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Physics Formulas Lite has 60 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 86% of Physics Formulas Lite's written reviews are positive against 25% of Unit Converter's, so the app with the better star average is not the one people write more warmly about.

Physics Formulas Lite ships an update every 4 months, Unit Converter weekly. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Physics Formulas Lite | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (60 ratings)](https://appshunter.io/ios/app/physics-formulas-lite/id814896887/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960/reviews)** |
| Number of ratings | **60** | 7 |
| Positive reviews | **85.7% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 19 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NSC CO. PTY LTD](https://appshunter.io/developer/579522076) | [Eugene Kugut](https://appshunter.io/developer/1557454962) |

## What reviewers say

### Physics Formulas Lite

[App page](https://appshunter.io/ios/app/physics-formulas-lite/id814896887)

Quickly access and reference physics formulas for study and work. Features include calculation tools, multi-language support, a favorites folder, and formula sharing. Search and add custom formulas and tools.

**Highlights:** Formula reference by category, In-app calculation tools, Multi-language support, Favorites folder for quick access, Formula sharing functionality, Searchable formula database, Add custom formulas and tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960)

This app offers over 30 unit converters for science, engineering, and everyday use. It features advanced options like adjustable rounding, smart search, and calculation history, with customizable themes and an iPad-optimized interface.

**Highlights:** Over 30 unit converters, Adjustable rounding, Smart search by name or units, Copy/paste values, Swap units with one button, Calculation history, Customizable themes

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $0.99 | per 7 days |
| Premium access | $0.99 | per month |
| Premium access | $1.99 | per 7 days |
| Premium access | $1.99 | per month |
| Premium access | $2.99 | per month |
| Premium access | $8.99 | per year |
| Premium access | $9.99 | per year |
| Premium access | $17.99 | per year |
| Premium access | $19.99 | per year |
| Premium access | $44.99 | one-time |


## Frequently asked questions

### Is Physics Formulas Lite free?

Physics Formulas Lite is free to download, with no in-app purchases.

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Which has better reviews, Physics Formulas Lite or Unit Converter?

Unit Converter is rated higher. Physics Formulas Lite averages 4.6 out of 5 from 60 ratings, while Unit Converter averages 4.9 from 7 ratings.

### Do Physics Formulas Lite or Unit Converter have ads?

Unit Converter shows ads; Physics Formulas Lite does not.

### Which is updated more often, Physics Formulas Lite or Unit Converter?

Physics Formulas Lite ships an update every 4 months, and Unit Converter weekly. Most recently, Physics Formulas Lite was updated on September 23, 2026 and Unit Converter on September 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*